Storefront Interior Bi-fold Door
Style: SFI 8000

Walls divide, but adding bi-fold doors from Portella seemingly eliminates them, connecting you in amazing ways to your surroundings. Mounted on a smooth track, our bi-fold doors effortlessly fold into each other to open up or close off any great room, living room or entertainment space while allowing full, unobstructed light—and your view—to shine through. We can design your doors to open from one side or in the middle, whatever you need to fit your space. Finish your doors with custom hardware to create a flush sill or step—both fold virtually out of sight.

Diagram of Portella Storefront Interior Bi-fold Door

Storefront Interior Bi-fold Door

Style: SFI 8000
  • Carbon Steel
  • Glass: Cardinal Clear Tempered
  • Glass Thickness 1/4” overall
  • Glazing Orientation: Exterior Metal Stop
  • True divided lite construction with 1” muntin bars
  • Sill: Heavy Duty E4 system with stainless steel pivots, carriers, hinges, dropbolts and edge/hinge pulls.
  • Door Lock: Rocky Mountain trim with Accurate mortise lock. 1 ¾”backset.
  • Continuous steel mounting flanges with orientation options
Download Specs
Storefront Interior Bi-fold Door


  • Pewter
  • Gun Metal
  • Grey
  • Dark Bronze
  • Black
  • Chestnut Brown
*Patina finishes available upon request.


  • Rocky Mountain
*Others by approval.

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How to Order

All Portella products are custom made to your exact specifications. Contact us today to be connected to your personal Project Manager. We’ll need overall sizes and details of what you’re looking for and your location to determine which product will work best in your climate and meet your state’s regulations. Click here for details.

Request DWG

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